139359 ÷ 10 
We want to figure out the number of times 139359 can be divided by 10.

On to step 1:
The number 10 fits into 1 0 times, leaving a remainder of 1.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 1 to get 1.
Grab the next digit (3) from the dividend, add it to 1, then carry on: 13 / 10

Step 2:
When dividing 13 by 10, we get 1 with a remainder of 3.
Write down 1 as next digit of the result. 
Result so far: 1.0
Deduct 10 from 13 and we're left with 3.
Append the next digit (9) from the dividend to 3 and continue with: 39 / 10

Step 3:
When dividing 39 by 10, we get 3 with a remainder of 9.
The number 3 becomes the next digit in our result. 
Result so far: 13.0
Subtracting 30 from 39 leaves us with 9.
Grab the next digit (3) from the dividend, add it to 9, then carry on: 93 / 10

Let's proceed to step 4:
If we divide 93 by 10, we get 9 and a remainder of 3.
Put 9 as the next digit of the answer. 
Result so far: 139.0
If we subtract 90 from 93, we get 3.
Include the next digit (5) from the dividend after 3, then repeat: 35 / 10

Going ahead to step 5:
10 goes into 35 3 times with a remainder of 5.
Record the quotient 3 as the next digit in the result. 
Result so far: 1393.0
Deduct 30 from 35 and we're left with 5.
Fetch the next digit (9) from the dividend, attach it to 5 and continue: 59 / 10

Going ahead to step 6:
10 can be fit into 59 5 times, resulting in a remainder of 9.
Put 5 as the next digit of the answer. 
Result so far: 13935.0
The remainder is 9 after subtracting 50 from 59.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Advancing to step 7:
10 can be fit into 90 9 times, resulting in a remainder of 0.
Use 9 as the next digit of our solution. 
Result so far: 13935.9
If we subtract 90 from 90, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

On to step 8:
10 can be fit into 0 0 times, resulting in a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 13935.9
Subtract 0 from 0 to get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

On to step 9:
10 can be fit into 0 0 times, resulting in a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 13935.9
Subtract 0 from 0 to get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The final result is 13935.9 with a remainder of 0.0.